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revision 1.5, Wed Oct 12 02:58:20 2005 UTC revision 1.11, Mon Jan 30 21:56:50 2006 UTC
# Line 46  Line 46 
46    
47  Name of the directory to use for the load files, WITHOUT a trailing slash.  Name of the directory to use for the load files, WITHOUT a trailing slash.
48    
49  =item estimatedRows (optional)  =item loadOnly
50    
51  Estimated maximum number of table rows. If omitted, the table will be created in  TRUE if the data is to be loaded from an existing file, FALSE if a file is
52  a format that permits an essentially unlimited number of rows.  to be created.
53    
54    =item ignore
55    
56    TRUE if the data is to be discarded. This is used to save time when only
57    a subset of the tables need to be loaded: the data for the ignored tables
58    is simply discarded.
59    
60  =back  =back
61    
# Line 57  Line 63 
63    
64  sub new {  sub new {
65      # Get the parameters.      # Get the parameters.
66      my ($class, $erdb, $relationName, $directory, $estimatedRows) = @_;      my ($class, $erdb, $relationName, $directory, $loadOnly, $ignore) = @_;
67      # Validate the directory name.      # Validate the directory name.
68      if (! -d $directory) {      if (! -d $directory) {
69          Confess("Load directory \"$directory\" not found.");          Confess("Load directory \"$directory\" not found.");
70      }      }
71      # Determine the name for this relation's load file.      # Determine the name for this relation's load file.
72      my $fileName = "$directory/$relationName.dtx";      my $fileName = "$directory/$relationName.dtx";
73        # Declare the file handle variable.
74        my $fileHandle;
75        # Determine whether or not this is a primary relation.
76        my $primary = ($erdb->_IsPrimary($relationName) ? 1 : 0);
77        # Check to see if this is a load-only, ignore, or a generate-and-load.
78        if ($ignore) {
79            Trace("Relation $relationName will be ignored.") if T(2);
80            $fileHandle = "";
81        } elsif ($loadOnly) {
82            Trace("Relation $relationName will be loaded from $fileName.") if T(2);
83            $fileHandle = "";
84        } else {
85      # If this is a primary entity relation, sort the output to remove      # If this is a primary entity relation, sort the output to remove
86      # duplicate keys.      # duplicate keys.
87      my $fileString = ($erdb->IsEntity($relationName) ?      my $fileString = ($erdb->IsEntity($relationName) ?
88                          "| sort +0 -1 -u -t \\t >$fileName" :                              "| sort +0 -1 -u -t \"\t\" >$fileName" :
89                          ">$fileName");                          ">$fileName");
90      # Open the output file and remember its handle.      # Open the output file and remember its handle.
91      my $fileHandle = Open(undef, $fileString);          $fileHandle = Open(undef, $fileString);
92            Trace("Relation $relationName load file created with primary flag $primary.") if T(2);
93        }
94      # Create the $erload object.      # Create the $erload object.
95      my $retVal = {      my $retVal = {
96                    dbh => $erdb,                    dbh => $erdb,
# Line 80  Line 100 
100                    fileSize => 0,                    fileSize => 0,
101                    lineCount => 0,                    lineCount => 0,
102                    stats => Stats->new(),                    stats => Stats->new(),
103                    primary => $erdb->_IsPrimary($relationName)                    primary => $primary,
104                      ignore => ($ignore ? 1 : 0)
105                   };                   };
106      # Bless and return it.      # Bless and return it.
107      bless $retVal, $class;      bless $retVal, $class;
108      return $retVal;      return $retVal;
109  }  }
110    
111    =head3 Ignore
112    
113    C<< my $flag = $erload->Ignore; >>
114    
115    Return TRUE if we are ignoring this table, else FALSE.
116    
117    =cut
118    #: Return Type $;
119    sub Ignore {
120        # Get the parameters.
121        my ($self) = @_;
122        # Return the result.
123        return $self->{ignore};
124    }
125    
126  =head3 Put  =head3 Put
127    
128  C<< my  = $erload->Put($field1, $field2, ..., $fieldN); >>  C<< my  = $erload->Put($field1, $field2, ..., $fieldN); >>
# Line 107  Line 143 
143  =cut  =cut
144  #: Return Type ;  #: Return Type ;
145  sub Put {  sub Put {
146      # Get the ERDBLoad instance.      # Get the ERDBLoad instance and the field list.
147      my $self = shift @_;      my ($self, @rawFields) = @_;
148        # Only proceed if we're not ignoring.
149        if (! $self->{ignore}) {
150            # Insure the field values are okay.
151            my $truncates = $self->{dbh}->VerifyFields($self->{relName}, \@rawFields);
152      # Run through the list of field values, escaping them.      # Run through the list of field values, escaping them.
153      my @fields = map { Tracer::Escape($_) } @_;          my @fields = map { Tracer::Escape($_) } @rawFields;
154      # If this is a primary relation, append the new-record field.      # If this is a primary relation, append the new-record field.
155      if ($self->{primary}) {      if ($self->{primary}) {
156          push @fields, '0';          push @fields, '0';
# Line 126  Line 166 
166      $self->{fileSize} += $lineLength;      $self->{fileSize} += $lineLength;
167      $self->{lineCount} ++;      $self->{lineCount} ++;
168      $self->Add("lineOut");      $self->Add("lineOut");
169            if ($truncates > 0) {
170                $self->Add("truncated", $truncates);
171            }
172        }
173  }  }
174    
175  =head3 Add  =head3 Add
176    
177  C<< my  = $stats->Add($statName); >>  C<< my  = $stats->Add($statName, $value); >>
178    
179  Increment the specified statistic.  Increment the specified statistic.
180    
# Line 140  Line 184 
184    
185  Name of the statistic to increment.  Name of the statistic to increment.
186    
187    =item value (optional)
188    
189    Value by which to increment it. If omitted, C<1> is assumed.
190    
191  =back  =back
192    
193  =cut  =cut
194  #: Return Type ;  #: Return Type ;
195  sub Add {  sub Add {
196      # Get the parameters.      # Get the parameters.
197      my ($self, $statName) = @_;      my ($self, $statName, $value) = @_;
198        # Fix the value.
199        if (! defined $value) {
200            $value = 1;
201        }
202      # Increment the statistic.      # Increment the statistic.
203      $self->{stats}->Add($statName);      $self->{stats}->Add($statName, $value);
204  }  }
205    
206  =head3 Finish  =head3 Finish
# Line 172  Line 224 
224  sub Finish {  sub Finish {
225      # Get this object instance.      # Get this object instance.
226      my ($self) = @_;      my ($self) = @_;
227        if ($self->{fh}) {
228      # Close the load file.      # Close the load file.
229      close $self->{fh};      close $self->{fh};
230        }
231      # Return the statistics object.      # Return the statistics object.
232      return $self->{stats};      return $self->{stats};
233  }  }

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